const count = 100
function getName() {
  return "jack"
}
function App() {
  return (
    <div className="App">
      this is React
      {/* 使用引号传递字符串*/}
      {'this is message'}
      {/* 识别js变量*/}
      {count}
      {/* 函数调用*/}
      {getName()}
      {/* 方法调用*/}
      {new Date().getDate()}
      {/* 使用js对象*/}
      <div style={{ color: 'red' }}>this is div</div>
    </div>
  );
}

export default App;
